B4X FEED B4XTable add Signature (Firm) Column

[practicalsoft]

Hello, i want to create a column in B4XTable to collect signature (firm) of inserted item by a defined user.
I read this post:

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But i do not know of to apply this code for my case (eg. how to save and where to save the various signatures (firms) .
Can some one suggest me a sample code or indication in order to solve ?
Thanks in advances

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